Perform the desired operation. Write the answer in the form a + bi.(-8 + i)(-8 - i)
A. 64
B. -8
C. -63
D. 65
Answer: D
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Solve the problem.The height of a vase is 5 inches. The table shows the circumference of the vase (in inches) at half-inch intervals starting from the top down. Estimate the volume of the vase by using the Trapezoidal rule with n = 10. Round your answer to the nearest thousandth. [Hint: you will first need to find the areas of the cross-sections that correspond to the given circumferences.] Circumferences 
A. 105.479 in.3 B. 61.856 in.3 C. 101.552 in.3 D. 62.876 in.3
Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = x2 between x = 0 and x = 4 using a right sum with two rectangles of equal width.
A. 38.75 B. 8 C. 20 D. 40
Solve the problem.A company makes a very durable product. It sells 20,000 in the first year, but will have diminishing sales due to the product's durability, so that each year it can expect to sell only seventy-five percent of the quantity it will have sold the year before. How many products can the company expect to eventually sell?
A. 80,000 products B. 40,000 products C. 35,000 products D. 26,667 products
Give the domain, range, or period, as requested.Range of y = - 
tan x
A. -? < - 
tan x < ?
B. -? < - 
tan x < ?
C. - 
tan x > -?
D. - 
tan x < ?